1 /* 2 * Copyright © 2022 Google, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 * SOFTWARE. 22 */ 23 24 #ifndef FREEDRENO_COMMON_H_ 25 #define FREEDRENO_COMMON_H_ 26 27 28 /** 29 * Helper macro to get around c++ being cranky about an enum that is a bitmask 30 */ 31 #ifdef __cplusplus 32 #define or_mask(d, mask) \ 33 do { \ 34 decltype(mask) _d = (d); \ 35 d = (decltype(mask))(_d | (mask)); \ 36 } while (0) 37 #else 38 #define or_mask(d, mask) \ 39 do { \ 40 d |= (mask); \ 41 } while (0) 42 #endif 43 44 /* 45 * swap - swap value of @a and @b 46 */ 47 #define swap(a, b) \ 48 do { \ 49 __typeof(a) __tmp = (a); \ 50 (a) = (b); \ 51 (b) = __tmp; \ 52 } while (0) 53 54 /* for conditionally setting boolean flag(s): */ 55 #define COND(bool, val) ((bool) ? (val) : 0) 56 57 #define BIT(bit) BITFIELD_BIT(bit) 58 59 #endif /* FREEDRENO_COMMON_H_ */ 60